MaxxAir Maxxfan Plus 4000K
#6 in Open lidFull review
For owners who want strong two way airflow and a thermostat without paying for a motorized lid. Pair it with a separate cover if it has to run in rain.
Amazon $253.31$253.31
The MaxxAir Maxxfan Plus 4000K is the better RV roof vent fan overall, rated 3.5 to 3.2. The MaxxAir Maxxfan Plus 4000K leads on features. The Kohree Manual RV Vent Fan KR5314 wins on price. The Kohree Manual RV Vent Fan KR5314 costs $142.32 less ($110.99 vs $253.31).
Kohree Manual RV Vent Fan KR5314
#8 in Open lidFull review
For a low cost upgrade from a plain vent that still blows in and out at ten speeds. Buyers who leave the RV unattended should pick a fan with a rain sensor.
Amazon $110.99$110.99
Prices were last checked November 2, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the MaxxAir Maxxfan Plus 4000K for features (reversible, thermostat vs reversible).
- Choose the Kohree Manual RV Vent Fan KR5314 for price ($110.99 vs $253.31).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every open lid RV roof vent fan; a clear win is highlighted. How we rank explains each one.
| Factor weight | MaxxAir Maxxfan Plus 4000K | Kohree Manual RV Vent Fan KR5314 |
|---|---|---|
| Overall rating | 3.5/5 | 3.2/5 |
| Price 25% | 38 $253.31 | 100 $110.99 |
| Airflow 15% | 92 900 CFM on high | 51 630 CFM credited of 934 claimed (25 per watt drawn) |
| Speeds 10% | 100 10 speeds | 100 10 speeds |
| Features 25% | 45 reversible, thermostat | 25 reversible |
| Warranty 25% | 50 2-year warranty | 0 warranty not published, scored as none |
Specifications
| MaxxAir Maxxfan Plus 4000K | Kohree Manual RV Vent Fan KR5314 | |
|---|---|---|
| Fan | ||
| Airflow | 900 CFM | 934 CFM |
| Speeds | 10 | 10 |
| Draw on high | - | 2.1 A |
| Blade | 12 in | - |
| Reversible | Yes | Yes |
| Lid and controls | ||
| Rain cover | No | No |
| Powered lid | No | No |
| Rain sensor | No | No |
| Thermostat | Yes | No |
| Remote | No | No |
| Light | No | No |
| Fit and build | ||
| Roof thickness | 2 to 6.5 in | - |
| Warranty | 2 years | - |